Oil-well pump



C. D. FATOR.

OIL WELL PUMP.

APPLlcATloN man MAR. 1s, m21.

Patented; June 113, E922.

STATES FATEIAT CHARLES .DIBRELL FATOR, OF SAN ANTONIO, TEXAS.

OIL-WELL PUMP.

To all whom t 'may concern.'

Be it known that I, CHARLES DIBRELL FA'ron, a citizen of the UnitedStates, residing at San Antonio, in the county of Bexar and State ofTexas, have invented certain new and useful Improvements in @il-WellPumps, of which the following is a specification.

This invention relates to pumps used in connection with wells for oiland other fluid; and it consists in the novel construction andcombination of the parts hereinafter fully described and claimed wherebythe pump barrel is anchored or locked to the well liner while the pumpis at work, and is unlocked at will when the pump and other parts are tobe raised in the well.

In the drawings, Figure 1 is a vertical section through the liner of `anoil well provided with a pump having devices for anchoring it to theliner according to this invention. Fig. 2 is a cross-section, taken onthe line 2-2 in Fig. 1. Fig. 3 is a crosssection taken on the line 3-3in Fig. 1. Fig. 4 is a detail showing how the locking arms lock thebarrel to the liner.

The well is provided with a perforated liner 5. The pump barrel 6 isarranged inside the liner, and 7 is a tubular pump rod which operatesthe pump, and which also affords a delivery passage for the oil or otherliquid which is pumped from the well. The working parts of the pump andits valves are of any approved construction.

In operating pumps as ordinarily constructed the delivery valves orother parts sometimes become partially obstructed by sand or othermaterial, and when the pump rod is raised in pumping the pump barrel issomtimes raised with it to some extent, which is a disadvantage inworking the pump.

In carrying out this invention, a tubular guide 8 is secured to theupper end of the pump barrel by a collar 9, and it has a guide collar 10secured on its upper end portion.

The pump rod 7 works freely inside the guide 8. A collar 12 is securedto the guide 8 and rests on the collar 9. Locking arms 14 are pivoted bypins 15 to the collar 12, and have serrated faces 16 at their outer endsfor engaging with the liner 5. Three arms are preferably provided, andthey are normally held in their raised positions, clear of the liner, byany suitable spring or springs 17. A locking pipe 18 is provided, and ap Speccaton of Letters Patent.

Application led March 18, 1921.

Patented J une 1.3, 1922.

Serial No. 453,218.

oonicallocking ring 19 is secured to the lower end of this pipe, and isslidable freely on the tubular guide 8. The locking ring 19 has ashoulder 20 at its upper end which projects under a collar 21 on thetubular guide, and forms a means for raising the pump. The middlel andupper parts of the locking pipe 18 are guided by the collar 10 on theguide pipe.

The locking pipe has a bush 24 at its upper part, and anti-frictionrollers 25 are journaled in this bush, and hold the pump rod 7 axiallyin line with the pump barrel, and permit the pump rod to slide freely.

A collar 26 is secured on the pump rod 7, below the bush 24, and whenthe pump barrel is to be raised, the collar 26 engages with the bush 24,so that the pump is lifted by means of the pump rod. Flexibleconnections or chains 27 arey secured to the locking pipe and to theends of the locking arms, and 28r are .springs for taking up the slackof these chains, so that they will always work to good advantage. hesechains raise the arms out of engagement with the liner before theshoulder 20 touches the collar 21. l/Vhen the parts are in the positionsshown in Fig. 1, the pump barrel 6 is not locked to the liner 5, and canbe raised and lowered. When the locking pipe is lowered, as shown 1nFig. 4, the conical locking ring 19 forces the locking arms outwardlyinto engagement with the liner 5, and prevents the pump barrel fromrising until the parts are restored to the positions shown in Fig. 1 byraising the locking pipe.

The pump is supported by the bottom of the well, so that it cannot slidedownwardly.

What I claim is:

1. rlhe combination, with a well liner, and a pump arranged therein andprovided with a slidable operating rod; of locking arms pivotallyconnected with the pump barrel, a guide secured to the pump barrel, anda looking device slidable on the said guide and operating when moved inone direction to press the said arms outwardly into locking engagementwith the said well liner, said locking device being held clear of theslidable pump rod by the said guide.

2. The combination, with a well liner, and a pump arranged therein; of atubular guide secure to the pump barrel, locking arms having their lowerends pivotally connected with the pump barrel, and a locking deviceslidable on the tubular guide and operating,

to raise the pump, by engagement with the said projection, when raised.

4. rllhe y@Ombination with a well liner, and

-a pump arranged therein; of a tubular guide secured to the pump barrel,locking arms having their lower ends pivotally 'connected withfthe pumpbarrel, a locking device for pressing the saidiarmsoutwardly whenlowered, and flexible connections between the free endportionsof thearms and the locking device whichfpull the said arms inwardly out O'fengagement with 4the liner ff Lwhenfthe locking ydevice is raised out-ofenr` gagement with the locking arms.

-5. The combination, with a well liner,- and va pumparranged therein; ofa tubular. guide secured to the vbarreland havingfa projecting guidecollar on its upper part, lockingarms having their lower ends pivotallyconnected with the pump barrel, a locking pipe slidable vertically overthesaid guide col- .lar and yhaving at its' lower end a conical lockingring slid'alolev on the' tubular guide and operating to press the saidarms out--V 6. The combination, with a well liner, and

a pump arranged therein and provided with a pump rod provided with aprojection; of a tubular guide secured to theV pump barrel and providedl with a projection, locking arms having their lower ends pivotallyconnected with the pump barrel, andra locking pipe Aslidable overthetubular guide and having at its lower end; a'conical ring whichpresses `the locking arms outwardly when vthe `locking vpipe is loweredandwhich raises the pump by engagement with the said projection fontheitubular: guide when the locking pipe raised, said locking pipehaving alsoat its upper part-an internal projection which is engaged bythe said proj ection' on the )um i rod when the )um D rod israised sothat the loelringzpipe and the pump a-re raisedrand lowered by the pumprod.

7. rllhe combination, with' awell liner,l and a pump-arranged therein;of lockingarms Y having their lower ends pivotally connected with thepump barrel, springs which lnormally hold the free'en'd portions'of thelockfing,` arms -outo'lrl engagement with' thewell liner, and a slidableloclring device which operates, when lowered, to press the said armsvoutwardly 'into locking engagement with the liner.

In testimony whereof I have affixed my signature.

CHAS. DIBRELLf FATOR.

